Determine the ideal solidification and melting point of your cooling element or gel pack
At what temperature you ideally transport your goods depends on several factors. In this article, we take you through the steps to choose the temperature medium with the right solidification and melting point, and tell you how to prepare it for use. Read along?
Biggest misconception: the colder the better
For customers who want to ship their products chilled, for example because it involves perishable food, flowers or temperature-sensitive medication, we regularly hear the assumption that the coldest possible cooling element works best. However, nothing could be further from the truth.
Do you want your product to remain around 0 degrees during transport? Then choose a temperature element with a melting and solidifying point around this temperature, and not a cooling element with a much lower melting and solidifying point. This is because the temperature impact is highest around the melting and solidification point. This is the point at which the cooling gel changes phase: from solid to liquid.
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In fact, throughout the phase change, the temperature remains constant. Think of a block of ice. It remains 0 degrees at a higher ambient temperature until the ice is completely melted. Only then does the temperature begin to rise further.
Shipping at different temperatures
For transports where products must remain chilled, that is, between 0 and 8 degrees Celsius, we recommend our regular gel packs and cooling elements. Do your products need to remain frozen? Then you can, for example, choose a super gel pack at -21 degrees Celsius. It is also possible that your products need to stay at a plus temperature. We offer various solutions for this too at Coolpack. Whether you are looking for a frozen solution down to -65 °C or a heat solution up to +89 °C, at Coolpack you have come to the right place!
An accurate solidification and melting point
We work with the very best partners at Coolpack to achieve high quality and accuracy. Are you using a PCM element of + 22°C? Then with lower quality temperature elements you may find that the turning point is not exactly at + 22°C but 0.5 degree lower or higher. We choose quality. Our temperature elements have a maximum range of 0.2°C. So the solidification point in this case will be between 21.9°C and 22.1°C.
Preparing temperature elements
Preparing a temperature element for frozen transport or ambient transport is done in a different way. Whereas you actually always freeze cooling elements and regular gel packs at a temperature below 0 degrees before use (the lower, the faster the cooling element is frozen), for plus temperature elements you match this to the ambient temperature during use.
- Is the outside temperature higher? Then prepare your temperature element at a lower temperature. Thus, the gel is solid before use and will change to the liquid form during use. For a PCM element with 5 °C gel, you can use a preparation temperature of + 1 °C to + 3 °C. For a PCM element or hot pack with +22 °C gel, you can maintain + 5 °C to + 15 °C.
- Is the outside temperature lower? Then prepare your temperature element at a higher temperature. Thus, the gel is liquid before use and will change to the solid form during use. For a PCM element with 5 °C gel, you can use a preparation temperature of + 10 °C to + 20 °C. For a PCM element or hot pack with +22 °C gel you can maintain + 25 °C.
The most important lesson: choose the right temperature range
The takeaway from this article? Choose a cooling or temperature element with a solidification and melting point as close as possible to the ideal shipping temperature of your product. Then you avoid the risk of freezing damage or excessively high temperatures and optimally preserve the quality of your product during transport and storage.
Do you have questions about the best cooling element or PCM solution for your application? Our team is happy to think along with you. Feel free to contact us or request a no-obligation quote.
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We weigh the interests of the customer, the environment and society, as well as ourselves as an organization, in all business decisions. In this way, we achieve balanced business operations and together ensure an ever better world.
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